On the first day when Jiang Wan transferred to another school, he witnessed the scene of a fall from a building and accidentally discovered a mysterious symbol on the palm of a girl who fell from the building, becoming the only witness. Student Union Chairman Lu Zhaoyan took the initiative to help Jiang Wan adapt to the environment. His gentle appearance concealed his unusual concern about the falling incident. Jiang Wan found blood stains in the infirmary and witnessed Lu Zhaoyan handling evidence late at night, and gradually realized that he had a secret connection with the case. Lu Zhaoyan approached Jiang Wan in the name of tutoring, and the two formed a subtle tacit understanding during the investigation of the case, but the truth pointed to a darker campus secret.
